Pneumatic conveyer.



G. E. LOB.

PMEUIWATEC CONVEYER. APPLlcAmN man 1uNE25. 914.

` Patented May 30,1916.

3 SHEETS-SHEET l.

@y MM5 fm wmw G. E. LOB. PNEUMATIC CONVEYEH. APPLICATION man :uw: 25, 1914.

Lm l Patenlted May 30,1916.

3 SHEETS-SHEET 2- G0 E. LOB, 0F CHJICAGO, lLINOIS.

Specification of Letters Patent.

Patenten nay ao, raie.

Application led 1' une 25, 1914. Serial No. 847,181.

To all whom t may concern.' i Be it known that l, GUIDO E; Lon, a citizen of the United States, residing at Chicago, in the county of Cook and State of grains which are moist, the discharge spouts of conveyers are liable to become clogged or closed, thereby decreasing the efficiency of the conveyer.

It is the object of the present invention to overcome this disadvantage by providing a discharge spout which .will positively eject all grain therefrom and wherein any accumulation of grain will be impossible.l

With the above and other objects in view, this invention consists in the construction, combination, and arrangement of parts all as hereinafter more fully described, claimed, and illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevation of the discharge spout forming the subject-matter of the present invention, illustrating, in dotted lines, the pivotal movement of the spout; Fig. 2 is a central vertical section thereof; Fig. 3 is a horizontal section taken along line 3 3, Fig. 2; Fig. 4 is a similar view along line 4-4-4, Fig. 2; Fig. 5 is a' vertical section taken along line 5 5, Fig. 2; Fig. 6 is a side elevation of a modified form of the spout; Fig. 7 is a central vertical section thereof; and Fig. 8 is a sectional view along line 8,-8, Fig. 7.

Reference being had more particularly to the drawings, Figs. 1 to 5, inclusive, 10 indicates the flexible discharge tube of a conveyer of a general type. This discharge tube 10 is surrounded by/a collar 11 to which is secured' a rigid tube 12 by a collar 13 co1.

operating with the collar 11. The lower end of the tube 1,2 has an angle iron 14 secured thereto and conforming to the contour thereof, one of the flanges extending horizontally from said tube. A second, or as will be seen, an outer, tube 15 is alined with and abuts the tube 12, said tube 15 being secured thereto for relative bodily movement. This attachment isaccomplished by an angle iron 16 secured to the upper terminal of the tube 15 which is provided with v a rib 16a that embraces the -horizontalarm of the angle iron 14, said ribresting in substantially thev same verticallgplane as said t horizontal arm. A metal ring 17 is secured by screws or other suitablameans to the up-f per surface of the rib 16 of the angle iron 4 16 and extends over the horizontal arm of the angle iron 14, resting iush thereon (see Fig. 2). A wear ring 18 of ber vor other adaptable material is interposed between the ring 17 andthe rib 16EL and-. l horizontal arm of the angle iron 14, being so provided to take up wear between the elements which may be caused by the relative bodily movement thereof. It is manifest that this sec-Nl ond or outer tube 15 is by this cnstruction so attached to the tube 12 that it may rotate l with respect theretoand at the same time g maintain its alnement and connection there with.

entire length thereof. This inner tube 19' is spaced from vand supported bythe .outer tube 15 through the medium of the spacing and reinforcing rings 20 which are interposed between said tubes. The inner tube 19 in combination with the outer tube 15 forms an air chamber 21 below the lower ring, whereby air may be directed to the spout or nozzle for forcing grain therefrom, as will be hereinafter more fully described. An air-distributing casing 22, `1n theshaple of an inverted truncated cone, surroundst e outer tube 15 somewhat. below the plane of the lower ring 20. 'llo support this casing 22 on the outer tube 15, the same is provided with the inwardly-extending flanges 23, and A24 at the upper and lower ends thereof respectively, which extend. to the tube 15 and rest flush thereagainst. rlihe outer tube 15 just above and below the casing 22, isusurrounded by a band 25 which is provided with an outstanding r1b 26. These ribs 26 rest parallel and in very close proximity to the adjacent-or coperating il 4nges 23 and 24. These balls 27 are intel'posed between each ange 23 and 24 and A11 inner tube 19 is located within the; outer tube 15 and extends throughout the' its coperating rib 26. vA leather gasket 28 1s held' over joint between each flange 23 and 24, and its coperating band by'the metal rings 29 and prevents the escape of air from the casing 22. By this construction it is possible to rotate the casing 22 on the outer tube 15 without destroying any of its connections or changing its position longitudinally with respect to the tube 15.

The upper flange 23 is pierced by an opening 30 through'which air enters the casing 22. This inlet opening 30 extends around about one-half of the tube 15, and is entirely surrounded or .embraced by an airsupply casing 31 which conforms to the shape of the inlet opening 30 at its base and curves upwardly to the supply pipe 32. The supply pipe 32 is secured to the casing 31 in any suitable manner so that it will move with the casings 31 and 22 when they are moved about the tube 15. Air under pressure is fed from thepipe 32 to the supply casmg 31, from Whlch 1t enters approximately one-half 0fthedistributilt1 Cllvlmbtl tinjougt tte iniet opening 30.

rom the distributing chamber or casing 22, the air, still under pressure, passes to the air chamber 21 between the tubes 15 and 19, through the openings 33 formed in the outer tube 15 for that purpose. The air, under pressure, is then directed to the discharge spout as will be hereinafter described.`

The extreme lower endof the outer tube 15 is surrounded by a collar 34, which is provided with the horizontal flange 35 and the opposed ears 36 and 37. A curved spout tube 38, having a horizontal flange 39 at its.

upper end which normally rests flush with the flange 35 of the collar 34, is located at the ends of the tubes 19 and 15 so that the passage therein alines with the passage in f the tube 19. By means of pivot pin 40 one side of the spout tube 38 iS permanently hinged to the collar 34 and consequently to the outer tube 15 at a point adjacent to the ears 37. A bolt 41 is pivoted to the pivot pin 40 and is arranged to swing between the ears 36 and, through the instrumentality of the thumb nut 42 bearing on said ears, take up the wear about the pivot pin 40; thus c insuring a tight connection between that side of the spout tube 38 and the tubes 15 and 19. v Diametrically opposite to the hinge 40 is a bolt 43 pivoted between the ears 44 on the spout tube 38, and provided with a. thumb nut .45.. This bolt is arranged to swingbetween the ears 37 v of the collar 34 so that the nut 45 thereof will bear vagainst the upper surfaces of said ears. In this manner the free side of the sleeve spout 38 may be drawn and secured to collar 34, thus insuring a positive connection between that side of the tube V38 and the' tubes 15 45 and releasing the bolt 43 from the ears` 37, it being unnecessary to adjust the bolt 41 or thumb nut 42 in any manner except to tare upper Wear around the hinge or pivot pm 0. v

On the interior of the spout tube 38 is an inner wall or partition 46 which extends around substantially one-half of said spout tube (see Fig. 5). A centrally-disposed longitudinal rib 47, interposed between the tube 38 and the wall or partition 46, supports and reinforcesthis wall or partition in such a kmanner that the air passage 48 formed thereby is unobstructed. The formation of this air passage 48 is such that the upper or inlet end thereof extends completely around the upper end of the spout tube 38 and is alined and connects with the air chamber 21 between the tubes 15 and 19; While the lower 01' outlet end is located fit the lOWOl.'

"i l 'l' l nl Ml 3 and adjacent to the reduced spout 49 secured to said tube (see Fig. 2). Manifestly, the air under pressure in the air chamber 21 will be directed into the space 48 and discharged therefrom into the spout 49. The .grain passing through the inner tube 19, spout tube 38, and spout 49 is thus acted upon by the air and positively forced through the said spout thereby preventing any accumulationf grain within either the spout 49 or spout tube 38.

In order to support the spout 49 and spout tube 38 after they have elevated to the dotted line position in Fig. 1, a hook 50 is secured to the lower band 25 and coperates with the staple 51 riveted to the spout 49.

The modified' form of discharge spout illustrated in Figs. 6, 7, and 8 is so constructed that the air under pressure, is directed entirely around and through the spout instead of around a portion thereof as in"the preferred form shown in F igS. 1 to 5, inclusive. This increases the positiveness with which the grain is ejected and at the same time prevents any accumulation of the grain within the spout. The superstructure of this modified form is identical with that of the preferred form; in other words, thetwo spout structures are the same to the lower ends of the air-distributing casing 22. Below the point they differ.

- A curved spout tube 52 is rigidly attached to the extreme lower end of the outer tube 15 by means of the abutting angle irons 53, one secured to the upper end of the spout 52 and the other Vto the lower end of the outer tube 15. The inner tube 19 is provided with a curved extension 19 which follows the curves of the spout tube 52 and is spaced therefrom, forming a continuation 21a of the air chamber 21. rlhis continuation `21a extends completely around the interior of spout tube 52 and terminates at the end of said spout tube. As illustrated in Fig. 7, the extension 19a of the inner tube 19 extends a triie beyond the end of the spout'tube 52 and' into the spout 54 which is attached thereto and forms a continuation thereof, thereby directing the air under pressure into the spout.

The spout 54 is pivoted to the spout tube 52 through the instrumentality of a collar 55 on the extreme end of the tube 52 coperating with a collar 56 on the inner end of the spout 54. A hinge 57 forms a pivotal connection between these collars 55 and 56, while diametrically disposed to said hinge is a bolt 58 pivoted to collar 55 and coperating with ears 59 formed on the collars 56. Threaded on the end of the bolt 58 is a thumb nut 60 which bears against the ears 59 and draws the collars together, thus securing the spout to the spout tube.

Manifestly the spout structure below the tube 12 is bodily movable below said tube in both forms of the invention, thereby making it possible to direct the How of the grain from the spout in any direction.

1 claim as my invention:

1. The combination of an inner and an outer tube having an air chamber therebetween, means for supplying air to said chamber, a spout hinged to and coperating with said tubes, and means-for directingthe air in said chamber to said spout comprising a side chamber in the spout adapted to connect to the air chamber between the tubes when the spout is operatively connectedto said tubes.-

2. The combination of a tube, a second tube surrounding the same to form an air chamber, means :for supplying air to said chamber, a spout hin ed to the lower end of and coperating with said tubes, and a wall within said spout forming an air passage adapted for connection with air space between said tubes when the spout is in cooperating position therewith.

3. The` combination of a tube having an air space surrounding the same, of a .spout hinged to the lower end of the tube, and means for directing air from said air space to the outlet end of theI s out including a side air passage in a portlon of the spout.

4. In a conveyer, an inner conveyer tube,l

an .outer tube surrounding the inner tube and separated suiiieiently to provide a passage for compressed air, a spout having anelbow hinged to the lower end of the conveyer tube and provided with a passage communicating with the air passage between the tubes.

5. ln a conveyer, an inner conveyer tube, an outer tube surrounding the inner tube litt;

veyer tube and provided with a passage y formed in one side of the elbow and communicating with the air passage between the tubes.

6. In a conveyer, an inner conveyer tube,

an outer tube surrounding'the inner tube and separated sufficiently to provide a passage for compressed air, a spout having an elbow hinged to the lower end of the conveyer tube and provided with a passage formed in one side of and bending around the elbow and communicating with the air passage between the tubes 7. The combination of a conveying tube, of an outer tube surrounding the same, forming an air chamber therewith, a distributing casing surrounding said outer tube, said outer tube being provided with a series of openings forming a connection between said casing and said air chamber, an air supply casing coperating with said distributing casing, having an extended connection therewith, a spout coperating with said tubes, and means within said spout for conducting air from the air chamber to the discharge end of said spout and there ejectingit.

8. The combination of a conveying tube, of an outer tube 'surrounding the same formingl an air chamber therewith, a distributing casing surrounding said outer tube, said outer tube being provided with a series of openings forming a connection between said casing and said air chamber, an air supply casing coperating with said distributing casing having an extended connection therewith, a spout coperating with said tubes, and a wall within said spout terminating adjacent to the discharge end thereof and forming a passage for connection with the air chamber aforesaid.

9. The combination of a conveying tube, of an outer tube surrounding the same forming an' air chamber therewith, a distributing casing surrounding said outer tube, said outer tube being provided with a series of openings forming a connection between said casing and said air chamber, an air supply casing coperating with said' distributing casing having an extendedconnection therewith", a spout having -an elbow hinged to said tubes, and means for conducting air from theair chamber aforesaid to the outer end of said spout including an air passage formed in the elbow of the spout.

10. The combination of a conveying tube, of an outer tube surrounding the same forming an air chamber therewith, a dis,

tributing casing surrounding said outer tube, said outer tube being provided w1th a series of openings forming a connection be- .tween said easing and said air chamber, an fixed my name in the presence of two witairbsupply casing coperating with dsaid disnesses. tri uting casing having an eXten ed conneotion therewith, and a spout hinged to GUIDO E' LOB' 5 said tubes having an air passage therein for Witnesses:

coperation with the air chamber aforesaid. RICHARD W. LOB,

In testimony whereof I have hereunto af- ROBT. KLoTz. 

